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Find the number of oxygen atoms …

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Find the number of oxygen atoms in 88g of CO2

Posted by Shreyas Nimje 5 years, 7 months ago

CBSE > Class 09 > Science

3 answers

Saksham Khanna 5 years, 7 months ago

6.022 * 10^22 atoms of oxygen.

Aarti Anand 5 years, 7 months ago

1mole of carbon dioxide =44g So, 88g of CO2 = 2 mole. Now, one mole carbon dioxide contains 32g of oxygen. So, two mole CO2 have 64g oxygen. Also 16g oxygen =1 mole 1g oxygen = 1/16 mole So, 64g oxygen =1/16*64 mole=4 mole Also, 1 mole = 6•022*10^23 atoms So, 4 mole = 4*6•022*10^23 atoms =2•4088*10^24 atoms. Thus, 88g CO2 have 2•4088*10^24 atoms of oxygen.

Saurabh Pandey 5 years, 7 months ago

88/44=2

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